Extremely precise control of thermal dissipation in quantum nanodevices using single-phonon manipulation by localized photon fields

2022 Fiscal Year Final Research Report

• Project/Area Number: 20K04307
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Review Section: Basic Section 19020:Thermal engineering-related
• Research Institution: University of Yamanashi
• Principal Investigator: ISHIKAWA Akira 山梨大学, 大学院総合研究部, 教授 (10508807)
• Project Period (FY): 2020-04-01 – 2023-03-31
• Keywords: 近接場光学 / 量子熱力学 / フォノン物性 / 量子制御

Outline of Final Research Achievements

To improve the operational performance of quantum nanodevices, I have conducted research to theoretically propose an extremely precise thermal-dissipation control based on single-phonon manipulation by a localized photon field. As a result, we succeeded in (1) elucidating the origin of interaction between nanostructures via localized photon fields, (2) proposing a method to control localized photon fields using nanoprobes, (3) constructing a theory to describe the concept of nanoscale thermodynamics, and (4) clarifying the change of a single-phonon state associated with excitation transfer via localized photon fields. We have achieved important academic results and obtained knowledge for the realization of thermal-dissipation control by single-phonon manipulation.

Free Research Field

光物性理論

Academic Significance and Societal Importance of the Research Achievements

量子ナノ系に対してマクロな系での熱力学的概念をそのまま適用できるかは未解明であるが、量子ナノ系がやり取りする熱の最小単位と考えられる単一フォノン状態について深く研究した本研究の成果は、ナノスケールの量子熱力学という新規学術分野の開拓へつながる意義を持っている。また、その成果を応用することで、単一フォノン操作にもとづく熱に対する量子ナノ工学の創成へつながるものと期待されるが、近年、デバイスの省エネルギー化や高効率化は重要な課題のひとつであり、エネルギー問題への貢献という社会的意義も持つ。